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Inheritance of Resistance to Dieldrin in Anopheles albimanus Wiedemann^*

Parent and hybrid populations of dieldrin resistant (El Salvador) and susceptible (Panama) Anopheles albimanus were tested for resistance by exposing 2- to 3-day-old adults to the World Health Organization dieldrin-impregnated test papers. At 0.4 and 0.8% concentrations, the mortalities of the above populations were about 5 and 98%, respectively, while those of the F₁ hybrids were somewhat less than those of the resistant El Salvador parent strain. Mortalities of the F₂ and backcross populations in general agreed with those expected on the basis of monofactorial inheritance.

It is concluded that in our laboratory populations, the ability to survive 2-hour contact with dieldrin on the part of 2- to 3-day-old, sugar-fed adult males and females is inherited as a simple factor, with resistance completely dominant over susceptibility.

^* This work was supported in part by research grants from the Pan American Health Organization and the U. S. Public Health Service.

This article has been cited by other articles:

				G. P. Georghiou and R. L. Metcalf Dieldrin Susceptibility: Partial Restoration in Anopheles Selected with a Carbamate Science, April 19, 1963; 140(3564): 301 - 302. [Abstract] [PDF]